If you replace it yourself, make sure you reset the BMS battery age too. I think there's a combination of buttons/pedals that can reset it, but I know you can do it via FORSCAN for sure. Otherwise it won't charge it above 80%. My car sat on a dealer lot for the first year of it's life which significantly shortened the life of my battery. *Updated to add mention of the AGS causing a communications problem with the alternator and battery light. 11/28/2020 05/27/2021 - BMS manual reset procedure added courtesy of @ddfred 07/12/2021 Ford part number for fuse added 07/18/2021 Added full location, description, and Ford part Ford Vehicles Electronic Parking Brake EPB Service Mode Activation and Deactivation. Brake repair for the rear brakes on 2015 plus model year Ford vehicles Ford Focus Service light reset, 2015 MYCheck Euro Car parts for parts - Lubricants & fluids. Engine. Cooling system. Brakes. Transmission. Air conditioning. Need to service or repair your Ford FOCUS 2018? Online and print formats available. Save time and money when you follow the advice of Haynes' master mechanics. Unless you hook up a reader to get the battery days in service, you're just blindly hoping it reset to zero. 2013 Ford Escape Titanium 2.0L AWD Reactions: ajef7885 General Information Ignition Switch Starting a Gasoline Engine Engine Block Heater Safety Precautions Fuel Quality Running Out of Fuel Refueling Fuel Consumption Emission Law Catalytic Converter Automatic Transmission General Information Hints on Driving With Anti-Lock Brakes Parking Brake Principle of Operation Using Cruise Control Load Limit With only one (1) fob near the vehicle, start the engine. With the engine running, press the Lock or Unlock button on the key fob one time. Repeat this procedure with all additional affected key fobs. When the vehicle properly samples the new key battery level the message will no longer be present. EFFECTIVE DATE: 04-MARCH-2014. R9f2c.